Ms. Johen is making a rectangular mosaic on her wall. She wants to use 12 rows of tiles, with 20 tiles in each row. If she has 188 yellow tiles, how many blue tiles will she need to complete her design?:

Ms. Johen is making a rectangular mosaic on her wall. She wants to use 12 rows of tiles, with 20 tiles in each row. If she has 188 yellow tiles, how many blue tiles will she need to complete her design?: